Glass polishing machine



' May 12., 1936. j, J. wANKo GLASS POLISHNG lVIGl-.UUl

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Filed Dec. 28, 1954 2 Sheets-Sheet lv May mi, 1936.

J. J. WANKO 2,040,720 GLASS POLSHING MACHINE 28, 1954 2 Sheets-Sheet 2 Filed Dec.

f ig.,1 is a Patented May 12, 1936 omiten smrss PATENT OFFICE Application December 2s, 1934, serial No.

ingrvacton on the article or articles being polished.

1n the accompanyingdrawings, t

Y side`V elevation of a glass. polishing machine constructed in accordance with the invention;

Fig. 2 is a front `elevation of the same; *.lig.Y 3 ,11's a vertical. front-to-rear section throughjthemachne, on the linel3-3 of Fig. 2 .LFigLl is a horizontal section taken substantially online 4 4 of Eig. 3; d

Fig. 5 is ay longitudinal4 sectionA through the valyecasing showingalso adjacent parts of the valve shifting mechanism, and,

Fig. 6 is @detail sections@ une s s ofig. 5.

v hollow metal cylinders having fabric coverings and the cylinders are provided with perforations which water may seep to keep the coverings moist. Water is ad-l mitted to the interior of the rolls through hollow perforatedtrunnions I0 to which flexible Water pipes I I are connected. v

The shaftof each roll isvprovided at one end with a b elt `pulley I2 for drivingv the.,rolls simultaneously and -at like speeds from La suitable source of power. As stated, the lower-roll is journaled to rotate in fixed bearings, `\zvl 1ile.1;he .mener T011 isioumaledmthe movable bearings 6 carried by the supporting and pressure regulat- The rolls are 'I is held pressure down against the` surfaces of vtheglass articles by means of coiled springs I surrounding, therods;9 loe-y tween1 the bearings k6 and abutmentsI I 6 slidably bet-,Ween the kupper ends of the,.springs and the` pressure regulating bar I3. Adjustingnand set screws Il Vcarried by the bar4 are providedto engage the bar I3 andrtoadjust it to. .regulate the pressure of ,the v.springson l.the bearings toqregulate andgvary the Working pres- Sureofftheroll .1 .toanydesireddegr e; 4 Disposed between and secured tothe uprjghtsZ slide comprising ..an abutmentbar or head I9 carried .bin arms. orlllbars 20 slidably mounted-- in guideszl on theuprishs 2,- '.lhe barr head 19, as shpwmsarranged ,in rear, ouh@ table.. la. and. inv a horizontal ,Planeslightlx aber@ the, Pleneiof the surface ofnsail table, While the arms 20 ,projefcttherefrom toward the front of the frame and-beneath ,the tablelooseiiing, tliek ll'olfacket's'.L y y the'V abutment bar I9 of the carriage may be ad-l justed With*respect to the rocker arms and to the shelf ortabiela. y l

In practice', the bottles bto be polished are laid on' th shelf. rs. triabpttoms ,of thek b9;- t'lesv being adjacent'vrthe rgap...between `the rolls, and' thrplr-ermsrfnd .carriage er.; wardly, as hereinafter explained, until 'the abut-V ment bar I9 is close to the polishing rolls which are in constant rotation. The bottles are then pushed into the space rolls and the friction of the rolls moves the bottles against the abutment bar and the latter move the carriage rearwardly, this movement of the carriage causing the rocker levers 22 to rock rearwardly. The extent of movement is controlled, as hereinafter explained, so that the upper ends of the bottles do not pass off the table, and at the end of the rearward movement the rocker arm, the carriage and the bottles are moved forwardly by power applied to the levers, and this back and forth movement is continued until both sides of the bottles are polished by the opposing rolls. By a manual operation, the power tending to move the levers and carriage forward is then cut off and the carriage is allowed to move backward far enough to permit the polished bottles to pass from between the rolls and drop down out of engagement with the abutment bar v inclined slide 3l which conducts them away from the rolls and the carriage.

Ihe carriage and the bottles which are moved rearwardly by the frictional pressure of the polishing be moved in the opposite direction by any suitable power operated means. In the drawing I have shown mechanism for this purpose adapted to be operated by compressed air or other fluid pressure. inders 32 having pistons therein are mounted on the uprights 2 and piston rods 33, connected to the pistons, are coupled to the levers 22 by connecting rods 34. A pipe 35 leads from the center of a valve casing 33, and branch pipes 35a and 35b extend to the rear ends of the cylinders 32. A D-type slide valve 31 is arranged within the valve casing. Fluid under pressure is admitted to the valve casing through a supply pipe 38 and the iiuid is exhausted from the casing through an exhaust outlet 39. Fig. 5 shows the position of the valve for supply of fluid to the motor cylinders, in which position the ports to pipes 35 and 36 are uncovered and the exhaust outlet 39 is closed. The valve is movable to the right from this position to a position in which it closes the port to pipe 35 and opens communication between pipes Ihe valve is adapted to be controlled by the forward and backward movements of the carriage and levers 22 and to control the forward movement or stroke thereof. To this end the valve stem 31a has pivotally mounted thereon for lateral swinging movement a tappet arm 4! which is provided with a handle 4l)a whereby it may be swung toward and from a valve actuating bar 4I slidably supported by the valve casing and operatively connected to the adjacent lever by a link 0r connecting rod 42. This bar is p-rovided with a series of regularly spaced openings 41a to receive tappet pins 43 and 44 which may be suitably engaged with the openings to vary their spaced relationship. These pins are adapted for engagement with the tappet arm 40, when the latter is positioned for coaction therewith, to automatically shift the valve to feed and exhaust positions at the ends of the backward and forward strokes, respectively, of the carriage and operating levers. It will be evident that the bar 4l travels with the carriage and levers on their backward and forward strokes and that the pins 43 and 44 may be set to engage the arm 40 to slide the valve to feed and exhaust positions, respectively, at the ends of these respective strokes, and that by adjusting the tappet pins the stroke of the carriage may be lengthened or shortened to suit bottles of different lengths.

The pivotal mounting of the arm 40 allows it to be swung out of the path of the pins so that the valve will not be operated thereby. To enable the arm 40 to be held in an inoperative p0- sition the arm may be provided with a cam portion 40h for engagement with a retaining spring 45.

After one group of bottles has been polished, it is necessary to discharge this group from the machine. To accomplish this, the operator takes hold of the levers 22 or the cross rod 26 and holds the levers in their forward position, and while thus held, swings the tappet arm 40 to one side out of the path of the tappet pins. In the forward position of the levers, the valve is in the position to which it has been moved by the tappet pin 44,-that is the position where the inlet port to which the supply pipe 35 is connected is closed and the port to which the exhaust pipe 39 is connected is open. The operator now allows the levers and carriage and tappet bar 4l, which is connected to one of said levers, to move backward far enough to permit the bottles to pass entirely from the shelf I8 and through the space between the polishing rolls, when the bottoms of the bottles will drop out of engagement with the bar I9 of the carriage and the bottles will be deposited on the slide 3l.

After the bottles have been discharged there is no force tending to move the carriage either rearwardly or forwardly. The operator now moves the rocker levers and carriage forwardly and another row of bottles is placed on the shelf I8, out of engagement with the polishing rolls. The tappet arm 43 is returned to its operative position between the pins 43 and 44 and the operator then pushes the row of bottles rearwardly on the shelf until they are engaged by the polishing rolls. The rolls carry the bottles against the bar I4 and the carriage is thereby moved rearwardly causing the rocker arms and the tappet rod 4| also to move rearwardly until the pin 43, engaging the tappet arm 40, moves the valve to the position shown in Fig. 5, wherein fluid will be admitted to the motor cylinders and rocker levers, carriage and tappet rod will be moved forwardly. The tappet pin 44, engaging the tappet arm during the forward stroke, will cause the valve to be shifted to out off the fluid supply to the cylinders and to open the latter to the exhaust, and thereupon the friction of the polishing rolls applied to the bottles will cause the bottles, carriage, rocker levers and tappet rod to move rearwardly. This back and forth movement of the bottles will continue automatically until the operator proceeds, as before described, to cause the discharge of the bottles.

It will be seen that by the apparatus described, a large number of bottles may be polished on both sides simultaneously, the number depending upon the width of the bottles and the shelf and the length of the polishing rolls. Also, by means of the adjustable tappet pins, the length of the stroke of the carriage may be adjusted so that long or short areas on large bottles may be polished, or long or short bottles may be polished throughout the lengths of their flat sides, as may be desired.

By admitting water to the rolls the fabric is kept moist so that it holds the polishing mate- Vment to move the a sie fabric were dry, and the the bottles relatively cool.

dev oe, not essential to the nornialworllng of the apparatus, to prevent the Fig. 2.

What I claim is: l. In a bottle polishing machine, the combination of Y direction.

4 the bar and bottles in the first mentioned direction in case of failure of said power operated means, during normal working of the apparatus. polishing bottles comprising spaced superposed polishing rolls rotatable in opposite directions, means for supporting a row of bottles for endwise movement back and forth between said rolls with the opposite sides of the bottles engaged by the rolls, comprising a stationary shelf and a movable abutment bar at opposite sides of the space between the rolls and extending parallel with the rolls, the bottles and bar being movable in a direction away from the shelf by the traction of the rolls on the bottles, means operated by fluid pressure for automatically limiting the movement of the bar and bottles in said direction and for moving the same in the reverse direction and to the same extent intermittently, and means for cutting off the fluid pressure and permitting an extended movement of the bar in the first-mentioned direction to cause the discharge of the bottles.

9. A machine for polishing bottles comprising superposed polishing rolls, rotatable in opposite directions, and means for supporting a row of bottles for endvvise movement back and forth between said rolls with the opposite sides of the bottles engaged by the rolls, comprising a stationary support .at one side of the rolls upon which the bottles are slidable and a movable abutment at the opposite side of the rolls against which the ends of the bottles are adapted to be pressed by the traction of the rolls, and means for permitting a limited movement of the abutment away from said support and for moving it to the same extent in the reverse direction, intermittently.

10. A machine for polishing bottles comprising superposed polishing rolls, rotatable in opposite directions, and means for supporting a row of bottles for endwise movement back and iorth between said rolls with the opposite sides of the bottles engaged by the rolls, comprising a stationary support at one side of the rolls upon which the bottles are slidable and a movable abutment `at the opposite side of the rolls against which the ends of the bottles are adapted to be pressed by the traction of the rolls, means for permitting a limited movement of the abutment away from said support and for moving it to the same extent in the reverse direction, intermittently, and means for permitting afurther movement of the abutment in the first-mentioned direction to cause the discharge of the bottles.

JOHN J. WANKO. 

